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Finding the Fourth Proportional to 28,536.53, 42,806.84 and 8,812.53

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Solution

The fourth proportional to 28,536.53, 42,806.84 and 8,812.53 is: 13,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.53 : 42,806.84 = 8,812.53 : x
  2. Step 2: Convert to fraction form
    28,536.53/42,806.84 = 8,812.53/x
  3. Step 3: Cross multiply
    28,536.53x = 42,806.84 × 8,812.53
  4. Step 4: Simplify right side
    28,536.53x = 377,236,517.64
  5. Step 5: Solve for x
    x = 377,236,517.64/28,536.53
  6. Step 6: Final answer
    x = 13,219.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.